Section 500.2430 - Manual of classifications; rules and rating plans; alternative filing; effective date; hearing; order of disapproval; adjustment of premium; review of filing(1) In lieu of the filing requirements of this chapter and as an alternative method of filing, any insurer or rating organization may file with the commissioner any manual of classification, rules or rates, any rating plan and every modification of any of the foregoing which it proposes to use, the filing to indicate the character and extent of the coverage contemplated. Every such filing under this section shall state the effective date thereof, shall take effect on said date, shall not be subject to any waiting period requirements, and shall be deemed to meet the requirements of section 2403 (1) (d) (rate standards). A filing and any supporting information shall be open to public inspection, if the filing is not disapproved.(2) At any time within 15 days from and after the date of any such filing, the commissioner may give written notice to the insurer or rating organization making such filing, specifying in what respect and to what extent he contends such filing fails to comply with the requirements of section 2403 (1) (d) and fixing a date for hearing not less than 10 days from the date of mailing of such notice. At such hearing the factors specified in section 2406 (1) shall be considered. If the commissioner after hearing finds that the filing does not comply with the provisions of this chapter, he may issue his order determining wherein and to what extent such filing is deemed to be improper and fixing a date thereafter, within a reasonable time, after which such filing shall no longer be effective. Any order of disapproval under this section must be entered within 30 days of the date of the filing affected.(3) In the event that no notice of hearing shall be issued within 15 days from the date of any such filing, the filing shall be deemed to be approved. If such filing shall be disapproved, the insuring provisions of any contract or policy issued prior to the time the order becomes effective shall not be affected. But if the commissioner disapproves such filing as not being in compliance with section 2403 (1) (d) (rate standards), he may order an adjustment of the premium to be made with the policyholder either by refund or collection of additional premium, if the amount is substantial and equals or exceeds the cost of making the adjustment. The commissioner may thereafter review any such filing in the manner provided in sections 2418 and 2420, but if so reviewed, no adjustment of premium may be ordered. Sections 2406 (2) (filing may be made by rating organization), 2408 (1) (commissioner shall review filing as soon as reasonably possible), and 2412 (insurer must adhere to filing) shall be applicable to filings made under this section.1956, Act 218, Eff. 1/1/1957 .